Excavation system and construction method of tunnel blasting

Abstract

The invention relates to a tunnel blasting excavation system. The tunnel blasting excavation system comprises a water bag, an explosive coil, a separating type wrapping rib piece, a U-shaped chargingtool, a formed steel door frame, a push-and-pull type stemming tamping special tool, a stemming sample preparation special tool, an excavation rock body, a safety protection net and a foot stand framed bent, wherein the separating type wrapping rib piece is arranged outside the explosive coil, the water bag and the explosive coil are connected into a whole through the separating type wrapping ribpiece, an external detonating cord is arranged on the outer side of the separating type wrapping rib piece, the outer side of the separating type wrapping rib piece is provided with explosive coil wall attaching rib pieces, the combined structure between the water bag and the explosive coil is charged through the U-shaped charging tool, and the U-shaped charging tool is provided with an arc-shapedcharging clamp plate, a round tube-shaped handle and an elastic handle. The tunnel blasting excavation system has the beneficial effects that the water bag and the explosive coil are firstly connected with connected with the separating type wrapping rib piece before charging is carried out, and are defined to be a whole through the separating type wrapping rib piece, and the external detonating cord is adopted, so that the filling efficiency of the stemming is improved; and when the water bag and the explosive coil are charged, the U-shaped charging tool is adopted for integral charging so that the charging efficiency can be improved, and reworking can be reduced.

Description

technical field [0001] The invention relates to a tunnel blasting excavation system and a construction method, which are suitable for tunnel blasting excavation projects. Background technique [0002] Blast hole filling water bag tunnel blasting method uses water bags and blasting mud to block the blast hole, making full use of the incompressibility of water, reducing the attenuation of shock waves during propagation, relatively prolonging the action time of blast energy, and improving the fragmentation of rocks And the effective utilization rate of explosive energy is very beneficial to the crushing of surrounding rock, and reduces the dust hazard, improves the construction environment in the tunnel, and saves the project cost. [0003] In the tunnel blasting excavation process using the blasting hole filling water bag tunnel blasting method, the installation of the tunnel excavation trolley and the improvement of the trolley's flying stone protection work are of great sign...

AI Technical Summary

Problems solved by technology

[0004] In view of this, in order to improve the poor construction effect of tunnel blasting excavation in general construction methods, it is urgent to invent a simple and effective tunnel blasting excavation system and construction method to improve the construction efficiency and construction safety of the tunnel blasting excavation system.

Images